<template>
  <div class="article-case">
    <div class="form-preview">
      <h2>{{ defaultObj.title }}</h2>
      <small>{{ defaultObj.subject }}</small>
      <a class="btn-edit" href="#" @click="edit">编辑</a>
    </div>

    <div class="form-edit" v-if="isEdit">
      <div class="form-item">
        <div class="label">标题：</div>
        <div class="input">
          <input type="text" placeholder="请输入标题" v-model="form.title" />
        </div>
      </div>
      <div class="form-item">
        <div class="label">频道：</div>
        <div class="input">
          <select v-model="form.subject">
            <option value="">请选择频道</option>
            <option value="前端">前端</option>
            <option value="运维">运维</option>
            <option value="测试">测试</option>
          </select>
        </div>
      </div>
      <div class="form-item">
        <div class="label"></div>
        <div class="input">
          <button class="cancel" @click="isEdit = false">取消</button>
          <button class="submit" @click="confirm">确认</button>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: 'ArticleCase',
  data () {
    return {
      isEdit: false, // false非编辑模式-隐藏表单；true是编辑模式-展示表单
      // defaultObj 用于展示到标题、标签位置
      defaultObj: {
        title: '如何成为一名优秀的程序员？',
        subject: '前端'
      },
      // form 用于和表单双向绑定
      form: {
        title: '',
        subject: ''
      }
    }
  },
  methods: {
    // 点击编辑的方法
    edit () {
      this.isEdit = true // 展示表单
      this.form = { ...this.defaultObj } // 做数据回填
    },
    // 点击确认
    confirm () {
      this.isEdit = false
      this.defaultObj = { ...this.form }
    }
  }
}
</script>

<style>
.form-preview {
  position: relative;
  display: flex;
  align-items: center;
}
.form-preview h2 {
  font-size: 18px;
  font-weight: normal;
}
.form-preview small {
  font-size: 12px;
  display: inline-block;
  padding: 2px 6px;
  background: #27ba9b;
  color: #fff;
  border-radius: 2px;
  transform: scale(0.8);
}
.form-preview .btn-edit {
  font-size: 12px;
  display: none;
  text-decoration: none;
  color: #069;
  margin-left: 20px;
}
.form-preview:hover .btn-edit {
  display: block;
}
.form-edit {
  padding-top: 20px;
}
.form-item {
  display: flex;
  margin-bottom: 20px;
  align-items: center;
}
.form-item .label {
  width: 60px;
  text-align: right;
  font-size: 14px;
}
.form-item .input {
  flex: 1;
}
.form-item input,
.form-item select {
  appearance: none;
  outline: none;
  border: 1px solid #ccc;
  width: 200px;
  height: 40px;
  box-sizing: border-box;
  padding: 10px;
  color: #666;
}
.form-item input::placeholder {
  color: #666;
}
.form-item .cancel,
.form-item .submit {
  appearance: none;
  outline: none;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 10px;
  margin-right: 10px;
  font-size: 12px;
  background: #ccc;
}
.form-item .submit {
  border-color: #069;
  background: #069;
  color: #fff;
}
</style>
